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Most Popular 1″ Filter Sizes
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8 x 20 x 1
10 x 10 x 1
10 x 20 x 1
10 x 24 x 1
10 x 30 x 1
12 x 12 x 1
12 x 14 x 1
12 x 18 x 1
12 x 20 x 1
12 x 24 x 1
12 x 25 x 1
12 x 30 x 1
12 x 36 x 1
14 x 14 x 1
14 x 20 x 1
14 x 24 x 1
14 x 25 x 1
14 x 30 x 1
14 x 36 x 1
15 x 20 x 1
16 x 16 x 1
16 x 20 x 1
16 x 24 x 1
16 x 25 x 1
16 x 30 x 1
16 x 36 x 1
18 x 18 x 1
18 x 20 x 1
18 x 24 x 1
18 x 25 x 1
18 x 30 x 1
18 x 36 x 1
19.75 x 21.25 x 1
20 x 20 x 1
20 x 22 x 1
20 x 23 x 1
20 x 24 x 1
20 x 25 x 1
20 x 30 x 1
20 x 32 x 1
20 x 36 x 1
20 x 36.125 x 1
21 x 23 x 1
22 x 22 x 1
22 x 24 x 1
22.125 x 36.625 x 1
24 x 24 x 1
24 x 30 x 1
24 x 36 x 1
25 x 25 x 1
30 x 30 x 1
30 x 32 x 1
Most Popular 2″ Filter Sizes
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12 x 24 x 2
14 x 20 x 2
14 x 25 x 2
16 x 20 x 2
16 x 25 x 2
18 x 24 x 2
18 x 25 x 2
20 x 20 x 2
20 x 24 x 2
20 x 25 x 2
24 x 24 x 2
Most Popular 4″ Filter Sizes
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14 x 25 x 4
16 x 20 x 4
18 x 24 x 4
20 x 20 x 4
20 x 25 x 4
24 x 24 x 4
Most Popular 5″ Filter Sizes
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16 x 25 x 5
20 x 20 x 5
20 x 25 x 5